Influence of government policies on handwashing and vaccine uptake in Kenya, Uganda, and Tanzania to prevent and control COVID-19: a systematic review - Muchangi, Josphat Martin; Mturi, James; Mukasa, Hajra; Kithuki, Kioko; Kosgei, Sarah Jebet; Kanyangi, Lennah Muhoja; Moraro, Rogers; Kamau, Samuel; Nankanja, Maureen (Frontiers in Public Health, 2024)